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<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (c) 2004-2011 QOS.ch<a name="line.2"></a>
<span class="sourceLineNo">003</span> * All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * Permission is hereby granted, free  of charge, to any person obtaining<a name="line.5"></a>
<span class="sourceLineNo">006</span> * a  copy  of this  software  and  associated  documentation files  (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "Software"), to  deal in  the Software without  restriction, including<a name="line.7"></a>
<span class="sourceLineNo">008</span> * without limitation  the rights to  use, copy, modify,  merge, publish,<a name="line.8"></a>
<span class="sourceLineNo">009</span> * distribute,  sublicense, and/or sell  copies of  the Software,  and to<a name="line.9"></a>
<span class="sourceLineNo">010</span> * permit persons to whom the Software  is furnished to do so, subject to<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the following conditions:<a name="line.11"></a>
<span class="sourceLineNo">012</span> *<a name="line.12"></a>
<span class="sourceLineNo">013</span> * The  above  copyright  notice  and  this permission  notice  shall  be<a name="line.13"></a>
<span class="sourceLineNo">014</span> * included in all copies or substantial portions of the Software.<a name="line.14"></a>
<span class="sourceLineNo">015</span> *<a name="line.15"></a>
<span class="sourceLineNo">016</span> * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,<a name="line.16"></a>
<span class="sourceLineNo">017</span> * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF<a name="line.17"></a>
<span class="sourceLineNo">018</span> * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND<a name="line.18"></a>
<span class="sourceLineNo">019</span> * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE<a name="line.19"></a>
<span class="sourceLineNo">020</span> * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION<a name="line.20"></a>
<span class="sourceLineNo">021</span> * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION<a name="line.21"></a>
<span class="sourceLineNo">022</span> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span>package org.slf4j.agent;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.io.ByteArrayInputStream;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.io.IOException;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.lang.instrument.Instrumentation;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Date;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.Properties;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.slf4j.instrumentation.LogTransformer;<a name="line.33"></a>
<span class="sourceLineNo">034</span><a name="line.34"></a>
<span class="sourceLineNo">035</span>/**<a name="line.35"></a>
<span class="sourceLineNo">036</span> * Entry point for slf4j-ext when used as a Java agent.<a name="line.36"></a>
<span class="sourceLineNo">037</span> *<a name="line.37"></a>
<span class="sourceLineNo">038</span> */<a name="line.38"></a>
<span class="sourceLineNo">039</span>public class AgentPremain {<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>    /**<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * JavaAgent premain entry point as specified in the MANIFEST.MF file. See<a name="line.42"></a>
<span class="sourceLineNo">043</span>     * &lt;a href="http://java.sun.com/javase/6/docs/api/java/lang/instrument/package-summary.html"&gt;http://java.sun.com/javase/6/docs/api/java/lang/instrument/package-summary.html&lt;/a&gt; for details.<a name="line.43"></a>
<span class="sourceLineNo">044</span>     *<a name="line.44"></a>
<span class="sourceLineNo">045</span>     * @param agentArgument<a name="line.45"></a>
<span class="sourceLineNo">046</span>     *            string provided after "=" up to first space<a name="line.46"></a>
<span class="sourceLineNo">047</span>     * @param instrumentation<a name="line.47"></a>
<span class="sourceLineNo">048</span>     *            instrumentation environment provided by the JVM<a name="line.48"></a>
<span class="sourceLineNo">049</span>     */<a name="line.49"></a>
<span class="sourceLineNo">050</span>    public static void premain(String agentArgument, Instrumentation instrumentation) {<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span>        // We cannot do sanity checks for slf4j here as the jars loaded<a name="line.52"></a>
<span class="sourceLineNo">053</span>        // by the application are not visible here.<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>        LogTransformer.Builder builder = new LogTransformer.Builder();<a name="line.55"></a>
<span class="sourceLineNo">056</span>        builder = builder.addEntryExit(true);<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>        if (agentArgument != null) {<a name="line.58"></a>
<span class="sourceLineNo">059</span>            Properties args = parseArguments(agentArgument, ",");<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span>            if (args.containsKey(AgentOptions.VERBOSE)) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>                builder = builder.verbose(true);<a name="line.62"></a>
<span class="sourceLineNo">063</span>            }<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>            if (args.containsKey(AgentOptions.TIME)) {<a name="line.65"></a>
<span class="sourceLineNo">066</span>                printStartStopTimes();<a name="line.66"></a>
<span class="sourceLineNo">067</span>            }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>            if (args.containsKey(AgentOptions.IGNORE)) {<a name="line.69"></a>
<span class="sourceLineNo">070</span>                String ignore = args.getProperty(AgentOptions.IGNORE);<a name="line.70"></a>
<span class="sourceLineNo">071</span>                builder = builder.ignore(ignore.split(":"));<a name="line.71"></a>
<span class="sourceLineNo">072</span>            }<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>            if (args.containsKey(AgentOptions.LEVEL)) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>                builder = builder.level(args.getProperty(AgentOptions.LEVEL));<a name="line.75"></a>
<span class="sourceLineNo">076</span>            }<a name="line.76"></a>
<span class="sourceLineNo">077</span>        }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>        instrumentation.addTransformer(builder.build());<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    /**<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * Consider the argument string to be a property file (by converting the<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * splitter character to line feeds), and then reading it like any other<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * property file.<a name="line.85"></a>
<span class="sourceLineNo">086</span>     *<a name="line.86"></a>
<span class="sourceLineNo">087</span>     *<a name="line.87"></a>
<span class="sourceLineNo">088</span>     * @param agentArgument<a name="line.88"></a>
<span class="sourceLineNo">089</span>     *            string given by instrumentation framework<a name="line.89"></a>
<span class="sourceLineNo">090</span>     * @param separator<a name="line.90"></a>
<span class="sourceLineNo">091</span>     *            String to convert to line feeds<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * @return argument converted to properties<a name="line.92"></a>
<span class="sourceLineNo">093</span>     */<a name="line.93"></a>
<span class="sourceLineNo">094</span>    private static Properties parseArguments(String agentArgument, String separator) {<a name="line.94"></a>
<span class="sourceLineNo">095</span>        Properties p = new Properties();<a name="line.95"></a>
<span class="sourceLineNo">096</span>        try {<a name="line.96"></a>
<span class="sourceLineNo">097</span>            String argumentAsLines = agentArgument.replaceAll(separator, "\n");<a name="line.97"></a>
<span class="sourceLineNo">098</span>            p.load(new ByteArrayInputStream(argumentAsLines.getBytes()));<a name="line.98"></a>
<span class="sourceLineNo">099</span>        } catch (IOException e) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>            String s = "Could not load arguments as properties";<a name="line.100"></a>
<span class="sourceLineNo">101</span>            throw new RuntimeException(s, e);<a name="line.101"></a>
<span class="sourceLineNo">102</span>        }<a name="line.102"></a>
<span class="sourceLineNo">103</span>        return p;<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>    /**<a name="line.106"></a>
<span class="sourceLineNo">107</span>     * Print the start message to System.err with the time NOW, and register a<a name="line.107"></a>
<span class="sourceLineNo">108</span>     * shutdown hook which will print the stop message to System.err with the<a name="line.108"></a>
<span class="sourceLineNo">109</span>     * time then and the number of milliseconds passed since.<a name="line.109"></a>
<span class="sourceLineNo">110</span>     *<a name="line.110"></a>
<span class="sourceLineNo">111</span>     */<a name="line.111"></a>
<span class="sourceLineNo">112</span>    private static void printStartStopTimes() {<a name="line.112"></a>
<span class="sourceLineNo">113</span>        final long start = System.currentTimeMillis();<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span>        System.err.println("Start at " + new Date());<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span>        Thread hook = new Thread() {<a name="line.117"></a>
<span class="sourceLineNo">118</span>            @Override<a name="line.118"></a>
<span class="sourceLineNo">119</span>            public void run() {<a name="line.119"></a>
<span class="sourceLineNo">120</span>                long timePassed = System.currentTimeMillis() - start;<a name="line.120"></a>
<span class="sourceLineNo">121</span>                System.err.println("Stop at " + new Date() + ", execution time = " + timePassed + " ms");<a name="line.121"></a>
<span class="sourceLineNo">122</span>            }<a name="line.122"></a>
<span class="sourceLineNo">123</span>        };<a name="line.123"></a>
<span class="sourceLineNo">124</span>        Runtime.getRuntime().addShutdownHook(hook);<a name="line.124"></a>
<span class="sourceLineNo">125</span>    }<a name="line.125"></a>
<span class="sourceLineNo">126</span>}<a name="line.126"></a>




























































</pre>
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